An In-Depth Look At The Haptic Smart Knob


At Hackaday, we love individuals periods when we get a probability to comply with up on a undertaking that we have previously featured. Typically, it is mainly because the job has sophisticated in some considerable way, which is often wonderful to see. Occasionally, although, new details on the first task are offered, and which is wherever we find ourselves with [Scott Bez] and his haptic clever knob job.

Warn readers could recall [Scott]’s announcement of this challenge again in March. It made really a splash, with favorable responses and a basic “Why didn’t I think of that?” vibe. And with good rationale the build high quality is excellent, and the concept is uncomplicated but powerful. By attaching a knob to the shaft of a brushless DC motor and mounting a modest circular Lcd display in the center, [Scott] came up with an enter unit that could be reprogrammed on the fly. The BLDC can deliver digital detents at any interval though creating haptic comments for button pushes, and the Liquid crystal display display screen can offer consumer suggestions.

But how is this sort of a matter constructed? That’s the topic of the current video, which has a ton of neat design facts and build insights. The big obstacle for [Scott] was supporting the Liquid crystal display monitor in the center of the knob although nevertheless allowing the knob — and the motor — to rotate. Aspect of the alternative was, unfortunately, a hollow-shaft motor that was out of inventory quickly just after he released this venture hopefully a ideal substitution will be offered before long. A further neat function is the way [Scott] built little strain gauges into the PCB itself, which select up the knob presses that act as an input button. We also uncovered the way button press haptics are presented by a speedy jerk of the motor shaft very clever.

This is a person of those initiatives that would seem like a solution waiting around for a challenge, and one thing that you’d create just for the coolness aspect. Hats off to [Scott] for adhering to up a sweet make with similarly juicy aspects.


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